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tensor tympani (muscle)

 

Definition: muscle of auditory ossicles; origin, the cartilaginous part of the pharyngotympanic (auditory) tube and the walls of its hemicanal just above the bony portion of the pharyngotympanic tube; insertion, handle of malleus; action, draws the handle of the malleus medially tensing the tympanic membrane to protect it from excessive vibration by loud sounds. nerve supply, branches of trigeminal through the otic ganglion.

Synonym(s): musculus tensor tympaniTA, tensor (muscle) of tympanic membrane, Toynbee muscle

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

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